وَ الَّیۡلِ اِذَا یَسْرِ ۚ﴿۴﴾

By (oath of) the night when it recedes

Tafsir al-Jalalain                                                                                                                        تفسیر الجلالین                                                

{وَاللَّيْل إِذَا يَسْرِ} مُقْبِلًا وَمُدْبِرًا

And [by] the night in motion, falling or receding.

Tafsir al-Jalalain of Imam Jalaaluddin Muhammad ibn Ahmad al-Mahalli al-Shafe’i t D. 864 A.H. and Imam Jalaaluddin Abd al-Rahman ibn Abi Bakr al-Suyooti al-Shafe’i t D. 911 A.H.